The proper French for this would be "Cela ce peut-il?". "Tu" is often (mistakenly, as far as I'm concerned) added at the end of a sentence to transform it into an interrogation. So, the affirmation "ça se peut" becomes a questions if you say "ça se peut-tu?". That is typically Canadian, but there is an archaic equivalent in France which has "ti" instead of "tu" added at the end of the sentence. In any case, this formulation is only used in very relaxed conversational style.

The other part of your question is related to the way many people in Québec pronounce a strong "s" or "z" after a "d" or "t" when it is followed by a vowel. It is not a mistake to do that in French, but it becomes one when it is exaggerated, which is often the case around here.

So, just to be clear, even though the "s" is pronounced (as in "tsu"), it is never written. And to answer your question, yes, adding "tu" after a verb in virtually any affirmative sentence transforms it into a question. Again, you'd never write it that way (unless you used the archaic French "ti"), you'd only hear it in (poor) conversation.